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Showing 1 to 20 of 20 for “"home range estimates"”.
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Spatial Ecology of the Desert Tortoise: Sampling Frequency and Biological Influences
… its recovery. As a part of this understanding, home range estimates are used to answer a variety of questions in ecological studies. However, home range estimates based on a collection of radio-telemetry locations are sensitive to methodological variables, such as sample size, sampling …
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Demographics and ecology of an isolated population of the desert pocket mouse, Chaetodipus penicillatus sobrinus, in the Las Vegas Valley, Nevada
… Male C. p. sobrinus has significantly larger home range estimates compared to females. The maximum dispersal distance was 133 meters and sex-biased dispersal was not observed. Home range overlap varied between sexes. Female intrasexual overlap was significantly greater when compared to …
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Home Range, Activity Period, Burrow Use, and Body Temperatures of the Nine-Banded Armadillo (Dasypus Novemcinctus) on the Northern Edge of Its Range
… armadillo has been steadily expanding its range. This study examines some aspects of the armadillo's natural history at the northern edge of its currently expanding range. Armadillos were observed utilizing from one to four burrows and mulitiple individuals were found in the same burrow. …
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Winter movements and habitat use of northern saw-whet owls at Assateague Island, Maryland
… I used the fixed kernel method to calculate home range estimates for seven owls. Ninety-five percent home range sizes averaged 122.9 ha (range from 39.7--261.9 ha) but varied in size and shape. I also calculated adaptive kernel, harmonic mean, and minimum convex polygon home ranges for …
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Assessment of the Small Indian Mongoose (Herpestes auropunctatus) in Sustaining Cattle Fever Tick populations in Puerto Rico
… I estimated the overlap of mongoose short-term home ranges within cattle pastures and compared utilized and non-utilized habitat types within an estimated area of habitat available to mongooses. Results suggest mongooses nonrandomly select for grasslands and a portion of all mongoose short-term …
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Dispersal and Harvest of Sage Grouse Utilizing the Test Reactor Area of the Idaho National Engineering Laboratory
… included determination of habitat use, home range, brood breakup, fall movements, and harvest of sage grouse using the TRA. Supplemental habitat data and fall movement data were collected from sage grouse summering at the Central Facilities Area (CFA) on the INEL in 1982. Seasonal …
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Ecology of the Endangered Sandy Cay Rock Iguana, Cyclura rileyi cristata, in the Bahamas
… of a study on the population demographics and home range size of <em>Cyclura rileyi cristata</em>. There are eight species of West Indian rock iguanas, genus <em>Cyclura</em>. All are endangered, including <em>C. rileyi</em>which is endemic to the Bahamas. One of three recognized subspecies, …
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Cheetah of the Serengeti Plains: A home range analysis
… areas in an historically reduced geographic range. Home range, a useful trait for threat assessment, species reintroduction, and population estimation, is plastic in cheetah with sizes ranging from 40 km2 to over 1000 km2 depending on location. Previous home range estimates for cheetah used …
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Using geographic information systems to examine red wolf home range and habitat use in the Great Smoky Mountains National Park
… System (GIS) analysis was conducted to determine home range and habitat use patterns of the reintroduced red wolf (Canis rufus) in the Great Smoky Mountains National Park (GSMNP). To facilitate this GIS analysis, the original telemetry data was first converted from obsolete file formats into a …
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Home range dynamics of black bears in the Alleghany Mountains of western Virginia
… Mountains of western Virginia. I examined home range dynamics of bears during 1994-2002 on 2 study areas that were approximately 160 km apart. I analyzed my data with 3 home range programs (AMA, HRE, and ABODE) and determined the HRE was the least biased and produced the most biologically …
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Ecology and morphology of the Kalahari tent tortoise, Psammobates oculifer, in a semi-arid environment
… hours). The frequency distribution of body size ranges was indicative of recruitment. Relative age, based on annuli counts, suggested that males were younger than females, perhaps because males as the smaller sex are more predation-prone than females. Linear relationships between annuli counts …
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Habitat overlap and seroprevalence of toxoplasma gondii in wildlife and feral cats in a natural area
… species were classified as having a large home range (LHR) or a small home range (SHR), based on published home range estimates and using a cutoff of 100 hectares. A total of 18 feral cats (16 at building and 2 at forest sites) were trapped with an overall seroprevalence of 33%; only one of …
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Comparative abundance and ranging behaviour of brown hyaena (Parahyaena brunnea) inside and outside protected areas in South Africa
… with humans, particularly in unprotected rangelands. One such species is the brown hyaena (Parahyaena brunnea), classified as 'Near Threatened' (Wiesel et al., 2008). The IUCN SSC hyaenid specialist group identified that brown hyaena are under threat due to human persecution and noted that …
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Drivers of farmer-African wild dog (Lycaon pictus) conflict in the Waterberg Biosphere Reserve, South Africa
… System (GIS) to determine the African wild dogs’ home ranges, movement patterns, and proximities to commonalities with humans and preferred land use. The private landowners possibly experiencing human-carnivore conflict were surveyed using an online survey (n = 81), and this information was used …
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Conservation of raptors and vultures in Botswana: with a focus on lappet-faced vultures Torgos tracheliotos
… from Pb from hunting across their entire range. GPS tracking data from 14 adult lappet-faced vultures Torgos tracheliotos tracked in Botswana from 2012 to 2017 were used to investigate movement ecology. The GPS tags provided information on overall population home range estimates, as well …
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Ecology and impacts of introduced rodents (Rattus spp. and Mus musculus) in the Hawaiian Islands
… using spool-and-line tracking, and rat home-ranges were estimated using radio-tracking. The diets of three of the rodents (R. norvegicus was absent from the three sites) were assessed using stomach content and stable isotope analyses. Additionally, field and captive-feeding trials were …
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Ocelot Density and Home Range in Belize, Central America: Camera-Trapping and Radio Telemetry
… declines in population abundance across their range. In recent decades protection measures (e.g. CITES) and decreased public demand for ocelot fur resulted in declines in hunting pressure. Do to their elusive nature there is little known about ocelot population size, structure or general …
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Spatial Ecology and Conservation Strategies for the Endangered Northern Long-Eared Bat (<i>Myotis septentrionalis</i>) in a Post-White-Nose Syndrome Landscape
… to continued mortality, failed recruitment, and range fragmentation, effective species conservation would benefit from local and regional research related to habitat selection and suitability, seasonal activity, and large-scale estimates of continued occupancy across the post-WNS landscape. In …
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DNA-based Population Estimation, Harvest Vulnerability, and Home Range Dynamics of Black Bears in Western Maryland
… estimate (0.25 bears/km2) is comparable to other estimates from southeastern and mid-Atlantic states. Our sampling approach did lead to more efficient sample collection, with more hair samples collected at snares located in areas with predicted high or medium probability of bear occurrence than …
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Evaluation of an Augmentation of Rocky Mountain Bighorn Sheep at Badlands National Park, South Dakota
… of bighorn sheep, was extirpated from its range by 1924. In 1964, 22 Rocky Mountain bighorn sheep were translocated from Pikes Peak, Colorado, to Badlands National Park (BNP) in southwestern South Dakota. Based on the estimated effective population size and analysis of molecular data, the …